Spark plug change intervals

lumpyv · Post by **lumpyv** » Mon Apr 30, 2012 9:36 pm

robwestwick wrote:Hi, just started to do a service on my bike (first time - novice mechanic).

I have bought NGK Iridium DPR9EIX-9 plugs and I'm not sure if I'm fitting them right. I have refitted them and torqued them up but the lead doesn't push down flush.

Am I doing this right? Would water get into the plug and lead?

Sorry if this is simple but I can't find the answer using the search function.

Any advice would be appreciated.

Rob

workshop day coming up down your way in june, its all on here . several top brains (not me) will be in attendance....

robwestwick · Post by **robwestwick** » Mon Apr 30, 2012 9:36 pm

The old plugs have a thin thread and the new ones have a thicker (about 3 times as thick) cap.

Does this need to be removed? And how?

benny hedges · Post by **benny hedges** » Mon Apr 30, 2012 9:46 pm

with the standard firestorm plug caps, you dont need the ally nipple on top of the plug.
just unscrew it with pliers.

btw - iridium plugs do not last forever.
you should be changing them at least annually.
theyre past their best at 5-8k miles.

dont try to re-gap or clean iridium plugs with a wire brush as you will destrou the coating on the electrode.
if you must clean them, just soak them in petrol and use a toothbrush to clean off any deposits.
(but there shouldn't be any!)

robwestwick · Post by **robwestwick** » Mon Apr 30, 2012 9:53 pm

Gents that is big help, feel a little silly now.....

Many thanks for your assistance :-)

Rob

benny hedges · Post by **benny hedges** » Mon Apr 30, 2012 9:56 pm

robwestwick wrote:feel a little silly now.....

dont. thats what owner's forums are for m8.

well, that & takin the pish of noobies lol!

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